| Adelphi Fort Gratiot Township | Eastern Time | 00:00 |
| Adelphi Ellenville | Eastern Time | 00:00 |
| Adelphi Fort McMurray | Mountain Time | 02:00 |
| Adelphi Fort Mill | Eastern Time | 00:00 |
| Adelphi Fort Mohave | Mountain Time | 03:00 |
| Adelphi Elbigenalp | Central European Time | -06:00 |
| Adelphi Elda | Central European Time | -06:00 |
| Adelphi Elizabeth | Central Australia Time | -13:30 |
| Adelphi Elizabeth Bay | Eastern Australia Time | -14:00 |
| Adelphi Elexalde | Central European Time | -06:00 |
| Adelphi Elen | Central European Time | -06:00 |
| Adelphi Coulter | United Kingdom Time | -05:00 |
| Adelphi Cottonwood | Mountain Time | 03:00 |
| Adelphi Cotgrave | United Kingdom Time | -05:00 |
| Adelphi Cottage Grove | Pacific Time | 03:00 |
| Adelphi Costa da Caparica | Western European Time | -05:00 |
| Adelphi Costa d'en Blanes | Central European Time | -06:00 |
| Adelphi Cotati | Pacific Time | 03:00 |
| Adelphi Cosmopolis | Pacific Time | 03:00 |
| Adelphi Costa Teguise | Western European Time | -05:00 |
| Adelphi Courthézon | Central European Time | -06:00 |
| Adelphi Cova da Piedade | Western European Time | -05:00 |
| Adelphi Covington | Central Time | 01:00 |
| Adelphi Cowaramup | Western Australia Time | -12:00 |
| Adelphi Court-St.-Etienne | Central European Time | -06:00 |
| Adelphi Courmayeur | Central European Time | -06:00 |
| Adelphi Cozumel | Eastern Time | 01:00 |
| Adelphi Cramlington | United Kingdom Time | -05:00 |
| Adelphi Distrito Federal | Central Time | 01:00 |
| Adelphi Dingle | Ireland Time | -05:00 |
| Adelphi Dinant | Central European Time | -06:00 |
| Adelphi Dinan | Central European Time | -06:00 |
| Adelphi Dikson | Krasnoyarsk Time | -11:00 |
| Adelphi Dillon | Mountain Time | 02:00 |
| Adelphi Dillingen | Central European Time | -06:00 |
| Adelphi Differdange | Central European Time | -06:00 |
| Adelphi Digne | Central European Time | -06:00 |
| Adelphi Dikili | Turkey Time | -07:00 |